Carton making apparatus



March 17, 1942. R. R. RICHARDSON 2,275,997

. CARTON MAKIVNGAPPARATUS I lFilecrsept. 2o, 1939 s sheets-,sheenADHESIVE LACQUER Mam i?, @42

R; R. RICHARDSON CARTON MAKING APPARATUS Filed sept. 2o, 1959 I 3Sheets--Sheei'l 2k l March 17,A 1942. R. R.v RICHARDSON 2,276,997

CARTON MAKING APPARATUS I Filed Sept. 20, 1939 3 Sheets-Sheet 3 PatentedMar. 17, 19424 Ralph R. Richardson, Chicago.

'United Biscuit Company or m., here enga, @meagoy This invention has forone of its objects the provision of means for facilitating theproduc--YY tion of a carton-forming blank having a face, orpredetermined portions thereof, coated with impervious or other nishingmaterial, or adhesive for employment in maintaining the blankpermanently folded, either vset up in carton form or in collapsed formfrom which it may be readily adjusted to set-up form. The invention isfurthermore concerned with the provision oi a carton structure and themethod and apparatus for making the same and in which a finishingcoating, and adhesive material for'the purpose indicated, may be appliedto the same face of the carton-forming blank in such a manner that whenthe blank is folded to carton form the entire inside or outside of thecarton will be lined or coated with the impervious or other coatingmaterial.

It is also an object of the invention to provide a method and apparatuswhereby two or more kinds of coating materials may be applied to acarton blank in successive operations, the succeeding 'coating beingapplied while the preceding coatings remain wet; to provide such anarrangement in which the depthor thickness and also the area ofthecoating may be effectively controlled; to provide means whereby twoor more coatings may be successively applied but simultaneously dried;and in general, it is the object of the invention to provide an improvedcarton and an improved method and apparatus for making the carton.

Other objects and advantages of the invention will be understood byreference to the following specification and accompanying drawings (3sheets) wherein there is illustrated a carton and the method andvapparatus herein contemplated for producing the carton.

In the drawings:

Figure 1 is a diagrammatic illustration showing the general scheme forapplying two wet coatings to a web of carton stock and thearcoating'material, the relationship of Figures 4' and 5 to each otherbeing indicated by the lines designated d-d and 5 5 on Figures 5 and-4,respectively;

Figures 6 and 7 are front and end views, respectively, of another rollset for applying another form or coating material to the web, therelationship of Figures '6 and 7 to each other being respectivelyindicated by the lines designated 5 8 and i--i, respectively, on Figures7 and 6; and

Figures d and 9 typify sections, respectively, on lines and -Q ofFigures5 and 7, respectively.

Referring now to larly to Figure l, a paper web designated I0 ofsuitable carton stock is directed around guide rollers il and li ,andthrough roll sets or devices rangement for simultaneously drying suchcoatings;

Figure 2 is a plan illustrating the form in which the two coatingmaterials are applied to the web of material for the production of acarton blank selected for purpose of illustration in this application;

Figure 3 is a plan of a carton blank which is selected for the purposesof illustration inthis application; a

Figures 4 and 5 are front and end views, respectively, of a roll set forapplying one kind of respectively indicated at i3 and lil forsuccessively applying lacquer and adhesive or other prededeterminedcoatings to predetermined areas of the underside of the web le of thecarton stock as it passes through said devices. The web with its wetcoating on its under surface is then guided around another guide roll l5and carried upwardly and over a guide roll id, thence through a suitabledrying and conditioning oven Il from which the web travels to apparatusfor performing other desired operations on the web. y

The drying and conditioning equipment above referred to should beunderstood as merely typifying any suitable equipment for the purposeindlcated'. It may consist of only a drying section such as representedby the upper sectioni9 of the oven, or it may comprise'or include amoistening or conditioning section represented by the lower section 20.

It will be understood that it is here contemplated, ior illustrativepurposes only, that the coating materials applied by the devicesindicated at I3 and it will be applied to one side of the web and thatprinting or other matter will be applied to the opposite side, which inthe iinished carton will be the outside thereof. Obviously, however, themethod and apparatus illustrated may be employed with advantage inapplying coatings to the carton stock in otherrelation-v ships.

As shown in Figure 3, the blank prepared by the method and apparatusherein disclosed is of generally rectangular form and it is scored orcreased to provide panels and flaps adapted to be folded to form arectangular carton. The blank as shown in Figure 3 is provided withcrease or fold lines designated 2l represented by i the drawings 'andparticufolded to carton form. There are also formedend panels 21 and 28which are adapted to be folded upwardly relative to the bottom panel 23to form end walls for the container. Flaps designated 29 and 30 extendfrom the end wall panels 21 and 28, respectively, and are adapted to befolded inwardly over the top of the contents of the package or, ifpreferred, folded to overlap the inside of the respective end walls. Theend walls 21 and `28 are respectively connected to the side walls 24 and25 by means of corner portions each of which is designated 3l and eachof which is` suitably slltted and creased to permit folding of suchcorner portion either inwardly or outwardly ofthe end wall in a mannerwell known in the art. 'I'he top panel 22 is also provided with endextensions 32 and 33, which are adapted to be folded downwardly tooverlap end walls 21 and 28 when the carton is formed.

The carton blank shown in Figure 3 may, for purposes of illustration, beconsidered as having been designed for containing a food product or thelike which deteriorates upon exposure to the air. To impart to thecarton the vability vto preserve its content against such deterioration,it is preferably coated with an impervious lining material which in thisinstance may be a lacquer coating. Lacquer dries quickly and forms asmooth, non-sticky, non-soluble, but flexible coating, which permitsfolding of the blank without cracking the coating. The entire insideface of the blank, except the corner portions 3l, is preferably coatedwith such impervious lining forming material, so that when the blank isfolded to carton form the carton will have its The crease lines dividethe 3| as shown in Figure 3. Thereafter the stock with its wet lacquerand vadhesive coatings is conducted through the dryer and from thence tosuitable cutting mechanism which creases and cuts out carton blanks inthe form shown in Figure 3. It will be understood, however, that ifdesired the web may be subjected to printing or lithographing on theopposite side of the web, either before or after, if preferred, the webmay be subjected to certain scoring and cutting operatlons before theapplication of any coatings thereto.

Referring now particularly to Figures 4 and 5,'

the lacquer coating is applied by means of a roll set or devicecomprising a platen roll 36 and an applicator roll 31. The latter hasits 'cylindrical surface engraved with a suitable intaglio design whichcorresponds to the area to be coated with lacquer as illustrated inFigure 2. As shown, the engraved area is represented by stippling, smallend areas designated 38 being left smooth and unengraved. The rolls 36and 31 are suitably mounted for rotation and the roll 31 has associatedwith it a pan 39 carrying a supply of lacquer through which the rollrotates. In its rotation, the roll picks up a coating of the lacquerwhich iills the engraved design on the surface of the roll. A doctorblade 40 is provided entire inside `surface lined. with the imperviouscoating. The lacquer coating -is indicated in Figure 3 (and also inFigure 2,) by stippling. For the purpose of maintaining the blank in itsfolded condition, the corner portions 3| are coated with adhesive asindicated by the shading covering such corner portions (both in Figures2 and 3). In folding the blank, the corner portions are preferablycaused to overlap on the outside of the end wall 21, the said portionsbeing folded upon themselves along diagonal fold lines indicated, sothat their adhesively coated surfaces contact each other to securelymaintain the parts in their folded condition. In

. the construction shown, the corner portions which are located outsideof the slit designated in each case 34 will come into direct contactwith the outside of the respective end walls of the carton to affordfurther securement of the carton in its folded condition.

As shown in Figure 2, the web of carton stock I0 may be considered astraveling in the direction of the arrow 35. In the passage of the webthrough the lacquer-applying device I3, a continuous coating of lacqueris applied to the central portion of the web and sidewise projectionsare also simultaneously applied to correspond with the lacquer-coatedportions of the blank illustrated in Figure 3. The web progresses and inits passage through the adhesiveapplying device I4, adhesive is appliedtol areas as indicated which correspond to the corner areas fordoctoring from the surface of the rollall of the lacquer not carried bythe engraved design, the doctor being provided with a transverse member4I which causes the lacquer scraped from the roll to be returned to thelacquer pan. By employing an engraved pattern for carrying the supply oflacquer and applying it to the carton stock, the amount of lacquerapplied to the carton stock may be effectively regulated by making thepattern of proper depth and of such coarseness or flneness as willretain the desired quantity of the lacquer. It will be understood thatthe doctor will remove from the surface of the roll, including theunetched areas 38, all of the coating material which is not contained inthe recessed portions `forming the intaglio.

The roll set or device designated I4 for applylng the adhesive intheareas 3| is shown in Figures 6 and 1, and preferably comprises asmoothsurfaced, cylindrical platen 42 and a pair of adhesive-applyingdiscs 43, 43. The two discs 43, 43 are of like form 'andconstruction andeach is of a thickness which corresponds to the width of the area to becoated with adhesive material. As indicated best in Figure 7. each disc'43 is provided with cylindrical surface portions 44 and interveningrecessed portions 45. 'I'he cylindrical surface portions 44 are providedwith intaglios or other suitable engravings as indicated in Figure 6,the said engravings being adapted to be filled with liquid adhesivematerial as an incident to rotation of the respective discs through abath of the material in a pan such-as indicated at 46. Suitable doctorssuch as indicated at 41 are provided for each of the discs 43 to removetherefrom all of the adhesive except that which is received within theengraved areas 44. As an incident to the passage of the carton stock webbetween the discs 43, 43 and the platen roll 42, the intaglios 44 applyadhesive to the areas of the web which constitute the corner portions 3|of the carton blank.

It will be perceived that because of the accurate control of the area towhich the respective coatings are applied, it is feasible to apply twoor more coatings successively and without drying one coating before thenext is applied. 'I'his is an important advantage iiowing from themethod and apparatus herein described, since it results in a materialsaving owing to the fact that but a single drying operation suices forboth coatings. The form of the intaglio or engraved design on the roller3'I and on the discs 43, 43 is here represented by stippling `andshading, respectively, merely forpurposes of clarity and illustration.It Will be understood that these designs may be alike and that they maybe in very widely varied forms. The cross-sectional illustrations,Figures 8 and 9, 'merely typify the general character of the intagliosurfaces of the lacquer-applying member 31 and the adhesive-applyingdiscs 43.

The devices I3 and I4 are preferably interconnected by gearing orother-suitable driving means so that they are properly synchronized witheach other to cause the adhesive-applying device to apply the adhesivein properfregister with the lacquer applied by the :other device. Suchdriving means is represented schematically in Figure 1 by dotted linerepresentation of a chain drive connection between the devices I3 andI4. It will be further understood that the devices I3 and I4 are drivenat such speed that the lacquer and adhesive-applying portions thereoftravel at the same peripheral speed as the paper web so as to avoidrelative movement therebetween. Any suitable form ofinterconnectingdrive for this purpose may be applied between the devicesI3 and I4 and one of the paper web guide rolls such as I2 or I5. Sincesuch driving means is well known to those skilled in the art, it is hererepresented only diagrammaticallyin Figure 1 by a dotted linerepresentation of a chain drive connection between the paper feed rollI2 and the device I3. Also, it will be understood that the rolls anddiscs of the devices I3 and I4 are journelled in suitable framework andthat the platen roll of each device may be geared to its cooperatingroll or disc so as to be positively driven at the proper speed. Sincesuch details are not a part of the present invention and are wellunderstood, they are not herein illustrated.

The described structure is such that it may be easily applied to more orless conventional carton-making equipment. 4It involves no dificult orcomplicated problems of operation and may be employed withoutdisproportionate increase in the cost of cartonproduction.

Changes in the structure set forth may be made Without departing fromthe spirit of the invention, the scope of which should be determined byreference to the following claims, the same being construed as broadlyas possible, consistent with the state of the art.

I claim:

1. In apparatus of the class described, an intaglio printing unitadapted to print on a predetermined area of a sheet, a second printingunit adapted vto print on another predetermined area of such sheet, saidprinting units being operable in closely coupled relation to each otherso that the last applied printing is applied before the first appliedprinting is dried, said second mentioned unit comprising a platen rolland a pair of rotary disc-like members spaced longitudinally of saidplaten roll, said rotary members each having cylindrical surfaceportions provided with intaglio printing designs and having .their pe'ripheral portions beyond said designs recessed relative to saidcylindrical portionsso as to be disposed in spaced relation tothesurface of said platen roll, said printing units being so syn-4chronized that said second printing unit is operment between.the,-rstprinted areas and the ro- Y tary members of said second unit.

2. In carton making apparatus, a pair of intaglio printing units, one ofsaid units having an intaglio design adapted to cover the entire area onone side of a carton blankv which will be exposed on one side of thecarton formed from such blank, the other of said units having anintaglio design adapted to be applied to a different area Y.

on said side of the blank itermediate portions of said before-mentionedprinted area, and which intermediate area, when the carton is formed,will be disposed in contact with an area of the blank on the side of thecarton opposite said exposed printed side, said printing units being-operable in'closely coupled relation to each other so that the lastapplied printing is applied before therst applied printing is dried, theprinting unit for the last applied printing being provided with a recesson opposite sides of its intaglio so as to avoid contact with the firstprinted surfaces ing both printed areas.

3. In apparatus of the class described, a printing unit adapted to printon a predetermined of the blank, and means for'simultaneously dry-`area. of a sheet, a second printing unit adapted to print on anotherpredetermined areaof such sheet, said printing units being operable inclosely coupled relation to each other so that the last applied printingis applied before the first applied printing is dried, said secondmentioned unitV comprising a' platen roll and a rotary intaglio membercooperating with said platen roll, said rotary Vintaglio member having acylindrical surface portion provided with an intaglio printing designand having its peripheral portions beyond said design recessed relativeto said cylindrical portion so as to be disposed in spaced relation tothe surface of said platen roll, said printing units being sosynchronized that said second printing unit is operative to print on acontinuous sheet in predetermined areas intermediate areas printed bythe first unit, said recessed portions of said rotary members permittingportions of said web to pass through said second printing unit free ofengagement between the rst printed areas and the rotary members of saidsecond unit.

` v RALPH R. RICHARDSON.

